A graduated cylinder was used to measure 200mL of distilled water into an Erlenmeyer flask and then 40mL of 0.6 M NaOH was added to the distilled water in the flask. The flask was then plugged with a rubber stopper and shook in order to mix the solution. A buret was then washed, rinsed with distilled water, and then 5 mL of the NaOH diluted solution. After the cleansing of the buret, it was then filled up with the NaOH diluted solution. The dilution of the solution was calculated to find the molarity of the NaOH.…
The control group was Brawny brand. The experimental group was Bounty, White Cloud, Homestore, Walmart Brand, and Sparkle. First, move one of the brand’s a paper towel sheets to a balance to see what the mass is. Then, take the dropper and drop water on the flat paper towel…
All of this matters and is important to know about because it is key to understand the background of the experiment beforehand. This investigation relates to past research based on the…
By adding Hydrochloric acid into solid Magnesium, in Data table #2, when Hydrochloric acid was first been added to solid Magnesium, the ribbon immediately start to bubble and producing fumes at the same time with a burning sound. Magnesium start to turn into a white liquid form. After the bubble start to disappear, more Hydrochloric acid was added, and the reactions repeats. Until none of the shiny silver Magnesium ribbon can be seen, and there is no more bubble, the reaction is over.…
In this lab we wanted to identify what the four mystery liquids were using density and their characteristic properties. We were initially given four liquids that were labelled numbers 1- 4, some graduated cylinders, and a scale, but we also knew that the 4 liquids were ethanol, vegetable oil, water, and cyclohexane. Using the mass that we found when we measured the liquid and using only 10 mL of the liquids we were able to calculate the density and easily identify the liquids and see if they matched the guesses we had made initially. Our results do confirm our hypothesis that you could identify liquids if you have their densities.…
Fuel Source: Initial mass of fuel (g) Final mass of fuel (g) Initial temperature (°C) Final temperature (°C) Fuel canister: (diethylene glycol) 102.0g 96.5g 20.5 76.50C Tea candle: (paraffin) 12.6g 12.3 20g 24.5 Data Table 3.…
Imagine trying to figure out one possible combination to a mixture, when there are over 100 possibilities. The 8th graders had to look at the physical and chemical properties, to somehow figure out the mixture. A group of students thinks that Baking Soda and Citric Acid is what’s in the mystery mixture. That group thinks that Baking Soda and Citric Acid is in it for a lot of reasons. One reason is that the mystery mixture has circular round objects in it and the Citric Acid is circular and round.…
I fill 1/3 of a 400 mL beaker with water. I weigh an125 mL Erlenmeyer flask and find it weighs 69.70g. Then I add 70 mL milk and put the flask back on the balance and weigh it again. Total to 138.679g. I calculate the mass of the milk in the flask; I subtracted 138.679g from 69.70g giving me the total sum of 68.979g. After I set up the Bunsen burner including iron clad, wire gauze ring stand and…
In order to determine this, 25 mL of each of the three fuels will be put into spirit burners. 80 mL of water will then be placed in a small conical flask atop a tripod. The initial temperature of the water and weight of the spirit burner will be recorded. The Spirit burner will be lit underneath the tripod, once left for 1 minute and 30 seconds, calculations will be used in order to calculate heat of combustion and enthalpy. In order to calculate the quantity of heat, the following formula will be used:…
Afterwards, the flask was filled with distilled water to the mark, so that the bottom of the meniscus is aligned with the ring in the neck of the flask. The filled flask was then weighted and the measure was recorded. Then, the distilled water was poured from the flask into a 50 ml beaker and its temperature was recorded. Once that was done, the flask was cleaned with an unknown solution provided by the instructor and then the flask was filled with the same unknown solution up to the mark. The flask was weighted and its mass recorded.…
How the changing mass of solute effects the heat given out when dissolved in water Aim To investigate how the changing mass of a solute will affect the energy given out. Introduction Dissolving is when a solute is mixed into a solvent to form a solution. Dissolving can be either endothermic or exothermic. Endothermic reactions happen when the energy given out when bonds are broken, is greater than the energy given out when bonds are made.…
When comparing the same substance under different conditions, the combined gas law can be mathematically written as (P"1" V"1" )/T"1" = (P"2" V"2" )/T"2" . Since the conditions of the experiment were not at standard temperature and pressure, the combined gas law is required in order to calculate the corresponding volume of hydrogen gas at STP. Single displacement reactions were also…
A bucket was first filled with water and then the Graduated Cylinder to 250mL. Then a lighter was weighed on a balance. After all preparation work was complete, the graduated cylinder was turned upside down and the butane was released from the lighter into the cylinder until the water in the cylinder was level to the water in the bucket. The volume of gas was taken and the lighter was weighed once more.[2]…
In performing this test, it was found that salt #287 did not melt under the flame of the bunsen burner which had a temperature of 800 ºc. This indicates the melting point of the salt is above 800-degree celsius. This result remains consistent with the known melting point of Sodium chloride of 800.7-degree celsius. Using the result of this test, salt #287 is most likely Sodium Chloride as no other salt has a melting point above 800- degree celsius. This experiment yielded conclusive results on the possible identities of the salts.…
This experiment examined the boiling process and the effect of added ingredients. Purpose of this experiment is to understand boiling process as well as the factors that affect this property. The objective of this experiment is to investigate the appearance and temperature of range of water that is lukewarm, scalding, simmering and boiling point. On top of that, we also need to determine the factors that boiling temperature of water alone and with various ingredients added.…